It is the fourth tallest building in Hartford and the fifth in the state.

Hartford 21 was designed by the Boston-based architectural firm Childs Bertman Tseckares Inc.[7] Construction began in June 2004 and was completed in 2006 by Turner Construction.

The building contains 262 luxury apartments as well as lower level retail and office space.

It is the tallest building constructed in Hartford in the 21st century.

Hartford 21 was completed in 2006, and is purported to be the tallest residential tower between New York City and Boston.